Category: Linux

Linux is my primary operating system. I used it on the servers, desktops, laptops, netbooks, and even mobile phones since approximately 1997. I’ve tried a number of distributions over the years, and even created a couple myself. I still look around sometimes to see what others are up to. But most of my machines are running some sort of Red Hat – either a quick and easy Fedora Linux, or a stable and secure Red Hat Enterprise Server, or a cheaper CentOS alternative.

And while by now I am very comfortable in the Linux environment (both graphical and command line), I still discover a lot of new and interesting things about it. When I come across something worthy, I usually share it with the rest of the Open Software world, using this category.

Fedora 31: Docker Fix

I’ve updated my laptop to Fedora 31 over the Christmas holidays. Pretty much everything works as it did before. Except for Docker, which suddenly fails to start the service.

A quick Google search pointed to the discussion in this bug report, where I found the solution that worked for me:

  1. Edit /etc/sysconfig/grub
  2. Append systemd.unified_cgroup_hierarchy=0 to the GRUB_CMDLINE_LINUX variable
  3. Run “grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg“
  4. Reboot

Once the machine came back up, docker service was running normally.

termtosvg – record terminal sessions as SVG animations

termtosvg (GitHub repo) is a handy little tool that makes recording animated sessions in the terminal as simple as humanly possible. Instead of generating heavy graphics or video animations, this tool creates SVG files, which are a lot smaller and easier. There is also a selection of themes to choose from.

Th resulting SVG files can be used as quick demos and guides in READMEs on GitHub, or as tutorials for your application’s website.

Lazydocker – a simple terminal UI for both docker and docker-compose

Lazydocker is a simple terminal UI for easier management of Docker. This is particularly useful for new Docker users, but can as well save plenty of keystrokes to the seasoned administrators.